Overview
The TLV431BIDBZR from Texas Instruments is a low-voltage adjustable precision shunt regulator. This device is part of the TLV431 family, known for its low-voltage operation and high precision. The TLV431BIDBZR is particularly useful in applications requiring a stable reference voltage with minimal temperature drift. It operates with a reference voltage of approximately 1.24V and can be adjusted to output voltages ranging from VREF to 6V. The device is available in various temperature grades, making it suitable for a wide range of industrial, automotive, and telecommunications applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Reference Voltage (VREF) | At 25°C | 1.234V to 1.246V |
| Reference Voltage Tolerance | At 25°C | 0.5% (B grade) |
| Adjustable Output Voltage (VO) | VREF to 6V | VREF to 6V |
| Operating Temperature Range | –40°C to 85°C (I grade) | |
| Typical Temperature Drift | 6 mV (–40°C to 85°C) | |
| Minimum Cathode Current for Regulation | 55 µA to 100 µA | |
| Off-State Cathode Current | VREF = 0, VKA = 6V | 0.001 µA to 0.1 µA |
| Dynamic Impedance | VKA = VREF, f ≤ 1kHz, IK = 0.1mA to 15mA | 0.25 Ω to 0.4 Ω |
| Package | SOT-23-3 (DBZ) |
Key Features
- Low-Voltage Operation: The TLV431BIDBZR operates with a reference voltage of approximately 1.24V, making it suitable for low-voltage applications.
- Adjustable Output Voltage: The output voltage can be adjusted from VREF to 6V using external resistors.
- High Precision: The device offers high precision with a reference voltage tolerance of 0.5% at 25°C.
- Low Temperature Drift: The device exhibits low temperature drift, ensuring stable operation over the entire temperature range.
- Low Operational Cathode Current: The minimum cathode current for regulation is typically 55 µA to 100 µA.
- Internal Compensation: The TLV431BIDBZR is internally compensated and stable without an output capacitor.
Applications
- Industrial Equipment: Suitable for various industrial applications requiring stable reference voltages.
- Automotive Systems: Used in automotive systems due to its robust temperature range and stability.
- Telecommunications: Ideal for telecommunications equipment where precise voltage regulation is necessary.
- Computing Devices: Can be used in computing devices for voltage regulation and reference purposes.
- Switching Power Supplies: Can replace Zener diodes in many applications, including on-board regulation and adjustable power supplies.
Q & A
- What is the reference voltage of the TLV431BIDBZR?
The reference voltage is approximately 1.24V.
- What is the adjustable output voltage range of the TLV431BIDBZR?
The output voltage can be adjusted from VREF to 6V.
- What is the reference voltage tolerance at 25°C for the TLV431BIDBZR?
The reference voltage tolerance is 0.5% at 25°C.
- What is the operating temperature range for the TLV431BIDBZR?
The operating temperature range is –40°C to 85°C for the I grade.
- What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 55 µA to 100 µA.
- Does the TLV431BIDBZR require an output capacitor for stability?
No, the TLV431BIDBZR is internally compensated and stable without an output capacitor.
- What is the typical temperature drift of the TLV431BIDBZR?
The typical temperature drift is 6 mV over the –40°C to 85°C range.
- What package type is the TLV431BIDBZR available in?
The TLV431BIDBZR is available in the SOT-23-3 (DBZ) package.
- Can the TLV431BIDBZR be used as a replacement for Zener diodes?
Yes, the TLV431BIDBZR can be used as a replacement for Zener diodes in many applications due to its sharp turn-on characteristic and adjustable output voltage.
- What are some common applications of the TLV431BIDBZR?
Common applications include industrial equipment, automotive systems, telecommunications, and computing devices.
